Page 20 - Unit2.docx
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from e.q. 3.2 we see that
M = ∑ M Z
Z
∴ ……………………………………………………..3.8
applying the same principle, in the x direction we get equivalent equation.If we assume
that the moment M X and M Z generated by the force Q are acting on a group of pile,
then the sum of forces acting on a single pile will be as follows:
……………………………………3.9
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if we dividing each term by the cross-sectional area of the pile, A, we can establish
the working stream σ :
Example 3.2
As shown in figure 3.2, A group of Vertical piles are subjected to an eccentric force Q,
magnitude of 2600kN. Determine the maximum and the minimum forces on the piles. Q
is located 0.2 m from the x-axis and 0.25 m from the z-axis.
